Analytical instrument for testing parameters of pool water



FIG. 1 is a front perspective view of an analytical instrument for testing parameters of pool water, showing our new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front perspective view thereof, with the top in open position; and,

FIG. 4 is a rear perspective view thereof.

The bottom plan view of the analytical instrument for testing parameters of pool water, which is not disclosed is plain and unornamented. 

The ornamental design for an analytical instrument for testing parameters of pool water, as shown and described. 